Perhaps you should try some spelling variations:
"stool modeling algorithm" » "stool scheduling algorithm" (Expand Search), "spatial modeling algorithm" (Expand Search)
"element method algorithm" » "element mould algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"settlement data algorithm" » "settlement jaya algorithm" (Expand Search), "settlement deer algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("element method algorithm") OR ((("stool modeling algorithm") OR ("settlement data algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element method algorithm\") OR (((\"stool modeling algorithm\") OR (\"settlement data algorithm\"))))".
• Removing quotes may allow a broader search: (( element method algorithm ) OR ((( stool modeling algorithm ) OR ( settlement data algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element method algorithm") OR ((("stool modeling algorithm") OR ("settlement data algorithm"))))*.